H.R. 2972 - To suspend temporarily the duty on 2-Naphthalenesulfonic acid, 6-[(2,4-diaminophenyl)azo]-3-[[4-[[4-[[7-[(2,4-diaminophenyl azo]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]phenyl]amino]-3- sulfophenyl]azo]-4-hydroxy-, trisodium salt.